1. Introduction
Nano zero valent iron (NZVI) has increasingly been used in environmental remediation and industrial wastewater
treatment for the removal of chlorinated contaminants (e.g., trichloroethylene or TCE), nitro aromatic compounds (e.g., nitrobenzene), and heavy metals such as arsenic (V) (Bai et al.,
2009; Kanel et al., 2006; Wang and Zhang, 1997). It is also